Could i still be pregnant

Ok so i think i started my period on the 25th it came 2 days early and only laster 3 days and then spotting afterwards. A few days afterwards i started throwing up in the mornings and cant eat anything without throwing it back up besides crackers and ginger ale. And even then i feel sick. I have a cough and been throwing up and sore boobs and i have these white dots along my breasts and have more stretch marks than usual. Well yesterday morning i took a pregnancy test but said negative. Is there anyway i can still be pregnant? Please no negative comments